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MENUITEMINFOW structure (winuser.h)

  • Makale

Contains information about a menu item.

Syntax

typedef struct tagMENUITEMINFOW {
  UINT      cbSize;
  UINT      fMask;
  UINT      fType;
  UINT      fState;
  UINT      wID;
  HMENU     hSubMenu;
  HBITMAP   hbmpChecked;
  HBITMAP   hbmpUnchecked;
  ULONG_PTR dwItemData;
  LPWSTR    dwTypeData;
  UINT      cch;
  HBITMAP   hbmpItem;
} MENUITEMINFOW, *LPMENUITEMINFOW;

Members

cbSize

Type: UINT

The size of the structure, in bytes. The caller must set this member to sizeof(MENUITEMINFO).

fMask

Type: UINT

Indicates the members to be retrieved or set. This member can be one or more of the following values.

Value Meaning
MIIM_BITMAP
0x00000080
 Retrieves or sets the hbmpItem member.
MIIM_CHECKMARKS
0x00000008
 Retrieves or sets the hbmpChecked and hbmpUnchecked members.
MIIM_DATA
0x00000020
 Retrieves or sets the dwItemData member.
MIIM_FTYPE
0x00000100
 Retrieves or sets the fType member.
MIIM_ID
0x00000002
 Retrieves or sets the wID member.
MIIM_STATE
0x00000001
 Retrieves or sets the fState member.
MIIM_STRING
0x00000040
 Retrieves or sets the dwTypeData member.
MIIM_SUBMENU
0x00000004
 Retrieves or sets the hSubMenu member.
MIIM_TYPE
0x00000010
 Retrieves or sets the fType and dwTypeData members.

MIIM_TYPE is replaced by MIIM_BITMAP, MIIM_FTYPE, and MIIM_STRING.

fType

Type: UINT

The menu item type. This member can be one or more of the following values.

The MFT_BITMAP, MFT_SEPARATOR, and MFT_STRING values cannot be combined with one another. Set fMask to MIIM_TYPE to use fType.

fType is used only if fMask has a value of MIIM_FTYPE.

Value Meaning
MFT_BITMAP
0x00000004L
 Displays the menu item using a bitmap. The low-order word of the dwTypeData member is the bitmap handle, and the cch member is ignored.

MFT_BITMAP is replaced by MIIM_BITMAP and hbmpItem.
MFT_MENUBARBREAK
0x00000020L
 Places the menu item on a new line (for a menu bar) or in a new column (for a drop-down menu, submenu, or shortcut menu). For a drop-down menu, submenu, or shortcut menu, a vertical line separates the new column from the old.
MFT_MENUBREAK
0x00000040L
 Places the menu item on a new line (for a menu bar) or in a new column (for a drop-down menu, submenu, or shortcut menu). For a drop-down menu, submenu, or shortcut menu, the columns are not separated by a vertical line.
MFT_OWNERDRAW
0x00000100L
 Assigns responsibility for drawing the menu item to the window that owns the menu. The window receives a WM_MEASUREITEM message before the menu is displayed for the first time, and a WM_DRAWITEM message whenever the appearance of the menu item must be updated. If this value is specified, the dwTypeData member contains an application-defined value.
MFT_RADIOCHECK
0x00000200L
 Displays selected menu items using a radio-button mark instead of a check mark if the hbmpChecked member is NULL.
MFT_RIGHTJUSTIFY
0x00004000L
 Right-justifies the menu item and any subsequent items. This value is valid only if the menu item is in a menu bar.
MFT_RIGHTORDER
0x00002000L
 Specifies that menus cascade right-to-left (the default is left-to-right). This is used to support right-to-left languages, such as Arabic and Hebrew.
MFT_SEPARATOR
0x00000800L
 Specifies that the menu item is a separator. A menu item separator appears as a horizontal dividing line. The dwTypeData and cch members are ignored. This value is valid only in a drop-down menu, submenu, or shortcut menu.
MFT_STRING
0x00000000L
 Displays the menu item using a text string. The dwTypeData member is the pointer to a null-terminated string, and the cch member is the length of the string.

MFT_STRING is replaced by MIIM_STRING.

fState

Type: UINT

The menu item state. This member can be one or more of these values. Set fMask to MIIM_STATE to use fState.

Value Meaning
MFS_CHECKED
0x00000008L
 Checks the menu item. For more information about selected menu items, see the hbmpChecked member.
MFS_DEFAULT
0x00001000L
 Specifies that the menu item is the default. A menu can contain only one default menu item, which is displayed in bold.
MFS_DISABLED
0x00000003L
 Disables the menu item and grays it so that it cannot be selected. This is equivalent to MFS_GRAYED.
MFS_ENABLED
0x00000000L
 Enables the menu item so that it can be selected. This is the default state.
MFS_GRAYED
0x00000003L
 Disables the menu item and grays it so that it cannot be selected. This is equivalent to MFS_DISABLED.
MFS_HILITE
0x00000080L
 Highlights the menu item.
MFS_UNCHECKED
0x00000000L
 Unchecks the menu item. For more information about clear menu items, see the hbmpChecked member.
MFS_UNHILITE
0x00000000L
 Removes the highlight from the menu item. This is the default state.

wID

Type: UINT

An application-defined value that identifies the menu item. Set fMask to MIIM_ID to use wID.

hSubMenu

Type: HMENU

A handle to the drop-down menu or submenu associated with the menu item. If the menu item is not an item that opens a drop-down menu or submenu, this member is NULL. Set fMask to MIIM_SUBMENU to use hSubMenu.

hbmpChecked

Type: HBITMAP

A handle to the bitmap to display next to the item if it is selected. If this member is NULL, a default bitmap is used. If the MFT_RADIOCHECK type value is specified, the default bitmap is a bullet. Otherwise, it is a check mark. Set fMask to MIIM_CHECKMARKS to use hbmpChecked.

hbmpUnchecked

Type: HBITMAP

A handle to the bitmap to display next to the item if it is not selected. If this member is NULL, no bitmap is used. Set fMask to MIIM_CHECKMARKS to use hbmpUnchecked.

dwItemData

Type: ULONG_PTR

An application-defined value associated with the menu item. Set fMask to MIIM_DATA to use dwItemData.

dwTypeData

Type: LPTSTR

The contents of the menu item. The meaning of this member depends on the value of fType and is used only if the MIIM_TYPE flag is set in the fMask member.

To retrieve a menu item of type MFT_STRING, first find the size of the string by setting the dwTypeData member of MENUITEMINFO to NULL and then calling GetMenuItemInfo. The value of cch+1 is the size needed. Then allocate a buffer of this size, place the pointer to the buffer in dwTypeData, increment cch, and call GetMenuItemInfo once again to fill the buffer with the string. If the retrieved menu item is of some other type, then GetMenuItemInfo sets the dwTypeData member to a value whose type is specified by the fType member.

When using with the SetMenuItemInfo function, this member should contain a value whose type is specified by the fType member.

dwTypeData is used only if the MIIM_STRING flag is set in the fMask member

cch

Type: UINT

The length of the menu item text, in characters, when information is received about a menu item of the MFT_STRING type. However, cch is used only if the MIIM_TYPE flag is set in the fMask member and is zero otherwise. Also, cch is ignored when the content of a menu item is set by calling SetMenuItemInfo.

Note that, before calling GetMenuItemInfo, the application must set cch to the length of the buffer pointed to by the dwTypeData member. If the retrieved menu item is of type MFT_STRING (as indicated by the fType member), then GetMenuItemInfo changes cch to the length of the menu item text. If the retrieved menu item is of some other type, GetMenuItemInfo sets the cch field to zero.

The cch member is used when the MIIM_STRING flag is set in the fMask member.

hbmpItem

Type: HBITMAP

A handle to the bitmap to be displayed, or it can be one of the values in the following table. It is used when the MIIM_BITMAP flag is set in the fMask member.

Value Meaning
HBMMENU_CALLBACK
((HBITMAP) -1)
 A bitmap that is drawn by the window that owns the menu. The application must process the WM_MEASUREITEM and WM_DRAWITEM messages.
HBMMENU_MBAR_CLOSE
((HBITMAP) 5)
 Close button for the menu bar.
HBMMENU_MBAR_CLOSE_D
((HBITMAP) 6)
 Disabled close button for the menu bar.
HBMMENU_MBAR_MINIMIZE
((HBITMAP) 3)
 Minimize button for the menu bar.
HBMMENU_MBAR_MINIMIZE_D
((HBITMAP) 7)
 Disabled minimize button for the menu bar.
HBMMENU_MBAR_RESTORE
((HBITMAP) 2)
 Restore button for the menu bar.
HBMMENU_POPUP_CLOSE
((HBITMAP) 8)
 Close button for the submenu.
HBMMENU_POPUP_MAXIMIZE
((HBITMAP) 10)
 Maximize button for the submenu.
HBMMENU_POPUP_MINIMIZE
((HBITMAP) 11)
 Minimize button for the submenu.
HBMMENU_POPUP_RESTORE
((HBITMAP) 9)
 Restore button for the submenu.
HBMMENU_SYSTEM
((HBITMAP) 1)
 Windows icon or the icon of the window specified in dwItemData.

Remarks

The MENUITEMINFO structure is used with the GetMenuItemInfo, InsertMenuItem, and SetMenuItemInfo functions.

The menu can display items using text, bitmaps, or both.

Note

The winuser.h header defines MENUITEMINFO as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement Value
Minimum supported client Windows 2000 Professional [desktop apps only]
Minimum supported server Windows 2000 Server [desktop apps only]
Header winuser.h (include Windows.h)

See also

Conceptual

GetMenuItemInfo

InsertMenuItem

Menus

Reference

SetMenuItemInfo

WM_DRAWITEM

WM_MEASUREITEM